Harmonic Drive System Integration Patent Landscape 2026
- Filing peaked in 2022 at 14 records and has not been exceeded since, suggesting the core integration claim space filled early rather than steadily growing.
- 49 of 50 receiving filings are Chinese with a single PCT filing — this is a domestically concentrated field, not yet globally contested.
- None of the six most active assignees filed in the latest year tracked in the momentum data, pointing to a pause among established filers rather than sustained incumbency.
Filing growth compares 2021 (2 records) with 2024 (8) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 50 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Harmonic drive system integration sits at the intersection of gearing and robotics: claims that combine a strain wave gear or harmonic reducer with a servo actuator, brake, encoder or controller inside a single joint module. The search set spans 2015 to 2026 and pulls records tagged against F16H49, B25J17 and B25J9/10 — the transmission and manipulator-joint classifications where these integration claims are filed.
The 50 families in scope are overwhelmingly classified under B25J, meaning this is a robotics-joint story more than a pure-gearing one. F16H, H02K, B63C and F16C appear only at the margins, marking where integration claims spill into motor and bearing design without becoming the primary art.
Filing trend and technology composition
Two views of the same 50 families: how filing activity has moved year over year, and which IPC subclasses the claims actually sit in.
A flat-to-declining trend after a 2022 peak
Filings rose from a single record in 2017 to a peak of 14 in 2022, then did not sustain that pace. With 2022 as the midpoint of the observed range, the shape reads as flat or declining rather than accelerating — bearing in mind that 2025-2026 counts are understated by publication lag of roughly 18 months.
B25J dominates; F16H is a minority classification
49 of 50 records carry a B25J manipulator/robot code, against just 4 for F16H gearing, 2 for H02K motors, and single appearances in B63C and F16C. The integration claim itself, not the harmonic gear mechanism alone, is where filers are staking ground.
Shares are the percentage of the 50 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Harmonic Drive System Integration with Eureka
This page is one run against one query. Ask Eureka your own question about harmonic drive system integration and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative recent filing
WO2024197684A1 — Hollow robot joint module with adjustable output mode
Filed by Jiangsu University of Science and Technology, this record integrates a dual-rigid-wheel harmonic reducer, dual-torque motor, friction brake and angle encoder around a common output flange axis, with a drive controller switching between a low-speed high-load mode and a high-speed low-load mode.One of very few PCT-routed filings in this set, and the only WIPO-published record identified.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN109366480A | 一种高集成度机电控一体化机器人关节模组 | 76 |
| 2 | CN108247668A | 一种集成化的机器人关节模组 | 24 |
| 3 | CN110561490A | 一种内嵌电磁制动的机器人关节模组 | 19 |
| 4 | CN216884037U | 一种机器人关节模组 | 13 |
| 5 | CN107263526A | 一种多功能轻量化服务机器人关节模块 | 11 |
| 6 | CN209491760U | 高集成度机电控一体化机器人关节模组 | 10 |
| 7 | CN113618776A | 一种新型协作机器人关节模组 | 9 |
| 8 | CN219946269U | 机器人关节模组及机器人 | 8 |
| 9 | CN115319796A | 机器人关节模块及机器人 | 8 |
| 10 | CN113414785A | 一种机电一体化智能机器人关节模组 | 8 |
Citation counts favour older records inside this searched corpus and should be read as a signal of past influence, not current importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers imply for a filing or freedom-to-operate decision
Three read-outs from the trend, geography and citation data, each pointing at a different practical question.
The rush already happened
Filing climbed from 1 record in 2017 to 14 in 2022 and has not exceeded that level since. A new entrant should assume the obvious integration combinations — reducer plus motor plus brake plus encoder in one housing — are already claimed by someone.
A domestically concentrated field
Nearly every filing in this set went through the Chinese receiving office, with only one routed through PCT. Filers targeting other jurisdictions currently face little competing art of record here, which cuts both ways: less prior art to design around, and less signal on what examiners elsewhere will accept.
Influence concentrates in early filings
The most-cited records were filed well before the 2022 peak, which is expected in a searched corpus — older filings simply have had more time to accumulate citations. Treat the citation table as a map of foundational claims, not of what matters most today.
Robotics code, not gearing code
This is filed and examined as robot-joint art rather than transmission art. Anyone drafting around this space should look first at B25J17 and B25J9/10 prosecution history, not the general F16H49 harmonic-gear literature.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to harmonic drive system integration, with the prior art for and against each one.
Who is filing, and where the claim space is still open
Activity is spread across robotics integrators, a gear specialist, and a university — with co-filing patterns hinting at internal group structures rather than cross-company alliances.
Co-filing looks internal, not collaborative
The two strongest co-assignee pairs each pair a parent-style entity with a regional subsidiary — a Midea group entity with a Guangdong Midea refrigeration unit, and a Kuka Shanghai entity with a Kuka Guangdong entity. This reads as intra-group filing structure rather than cross-company joint development.
Established filers have gone quiet
Every assignee tracked for recent-year momentum — including Estun (Borunte), Lingaxis, Midea, Shenzhen Tongchuan, Shuanghuan Driveline and Jiangsu University of Science and Technology — shows zero filings in the latest year. That is consistent with the broader flat-to-declining trend rather than a signal about any one company's strategy.
A long tail behind the leaders
Filing is not dominated by a single owner; the ranking runs from robotics integrators and a driveline specialist through to a university applicant, indicating the field is still open to new entrants rather than locked up by one holder.
| Assignee | Recent year | YoY |
|---|---|---|
| Estun Borunte Robot Co., Ltd. | 0 | — |
| Dongguan Lingaxis Automation Technology Co., Ltd. | 0 | — |
| Midea Group (Shanghai) Co., Ltd. | 0 | — |
| Shenzhen Tongchuan Technology Co., Ltd. | 0 | — |
| Zhejiang Shuanghuan Driveline Co., Ltd. | 0 | — |
| Jiangsu University of Science and Technology | 0 | — |
| Jiangsu Kaixuan Intelligent Technology Co., Ltd. | 0 | — |
| KUKA Robotics Manufacturing (Shanghai) Co., Ltd. | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, drafting, or monitoring.
Check freedom-to-operate against the most-cited records
Start with the highest-citation Chinese families before drafting any integrated joint-module claim, since these anchor the prior art that later filings build on.
Explore prior art in EurekaWatch for a resumption of filing
With every tracked assignee at zero in the latest year, the next uptick — whenever publication lag clears it — will indicate who is re-entering the space first.
Track assignee activity in EurekaModel claims outside the B25J core
Thin coverage in F16H, H02K, B63C and F16C suggests room to draft integration claims anchored in motor or bearing design rather than the crowded robot-joint classification.
Draft alternative claims in EurekaCommon questions about this landscape
In this dataset it means a claim that combines a strain wave gear, harmonic reducer, or harmonic drive with an actuator, brake, encoder, or controller inside a single robot joint module, rather than claiming the gear mechanism on its own. The search combines harmonic-drive terminology with integration-specific language such as integrated actuator or robot joint module, restricted to gearing and manipulator IPC codes. That combination is what separates this landscape from a general strain-wave-gear search.
The trend data shows filings rising from a single record in 2017 to 14 in 2022, then not exceeding that level in the years tracked. Because publication typically lags filing by around 18 months, the most recent one or two years in any such trend are understated and should not yet be read as a genuine decline. The honest reading is that the obvious integration combinations were claimed early and the field has not yet shown a second wave.
Almost entirely by filing venue: 49 of the 50 records in this set went through the Chinese receiving office, with a single PCT-routed filing. That does not mean the underlying technology is only relevant in China, but it does mean the documented prior art and competitive activity are concentrated there. A company planning to file elsewhere should expect thinner prior art on record outside China, which lowers some rejection risk but also offers less guidance on examiner behaviour.
The assignee ranking spans robotics integrators, a driveline specialist, and at least one university, with no single filer dominating the full set of 50 families. Co-assignee pairs that do appear look like intra-group filing structures — a parent entity paired with a regional subsidiary — rather than cross-company collaboration. Recent-year momentum data shows the most active tracked assignees all at zero filings in the latest year, so current leadership by volume does not necessarily indicate current filing activity.
The IPC composition shows 49 of 50 records under B25J robotics codes against only a handful in F16H gearing, H02K motors, F16C bearings and B63C vessel-launching codes, meaning integration claims anchored outside the core robot-joint classification are thin. Sub-areas such as dual-output-mode switching, in-housing brake and encoder co-location, and coaxial thermal management around the motor-reducer interface show limited dedicated coverage in this set. These are reasonable starting points for a drafting search rather than confirmed gaps, since a broader corpus may surface adjacent art.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.